28798455 has 16 divisors (see below), whose sum is σ = 52660224. Its totient is φ = 13164960.

The previous prime is 28798447. The next prime is 28798457. The reversal of 28798455 is 55489782.

It is not a de Polignac number, because 28798455 - 2³ = 28798447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28798457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137031 + ... + 137240.

It is an arithmetic number, because the mean of its divisors is an integer number (3291264).

Almost surely, 2^28798455 is an apocalyptic number.

28798455 is a deficient number, since it is larger than the sum of its proper divisors (23861769).

28798455 is a wasteful number, since it uses less digits than its factorization.

28798455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274286.

The product of its digits is 806400, while the sum is 48.

The square root of 28798455 is about 5366.4191971929. The cubic root of 28798455 is about 306.5182916183.

The spelling of 28798455 in words is "twenty-eight million, seven hundred ninety-eight thousand, four hundred fifty-five".